Soo climate — normals and trends

Q: What is the climate of Soo?

Soo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 2,115 mm of precipitation per year.

Q: What is the hottest day ever recorded in Soo?

The hottest day measured in Soo between 1940 and 2025 was 17 August 2020, reaching 35.9 °C.

Q: What is the coldest day in Soo?

The coldest day measured in Soo between 1940 and 2025 was 10 February 1980, at -10.1 °C.

Q: Does it snow in Soo?

Yes. Soo gets on average 2.0 cm of snow per year and has around 40 frost days.

Q: Has the climate of Soo warmed?

Yes: Soo warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Soo?

The wettest day measured in Soo between 1940 and 2025 was 19 August 1946, with 241 mm of rain in 24 hours.

Q: What was the windiest day in Soo?

The windiest day measured in Soo between 1940 and 2025 was 30 August 2004, with winds reaching 64.5 km/h.

Q: What is the warmest month in Soo?

The warmest month in Soo is August (26.0 °C on average); the coldest is January (5.0 °C).

Q: How much does it rain in Soo?

Soo receives on average 2,115 mm of precipitation per year, spread over about 161 rainy days.

Q: Is it sunny in Soo?

Soo gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.

Soo (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 2,115 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is August (26.0 °C on average) and the coldest is January (5.0 °C). Rainfall peaks in June.

Soo averages 40 frost days, 35 hot days (≥ 30 °C) and 161 rainy days per year.

Soo has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.

The number of frost days there went from about 55 to 26 per year over the period.

The hottest day of the period reached 35.9 °C (on 17 August 2020) and the coldest -10.1 °C (on 10 February 1980).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

SooKagoshima

coords: 31.65°, 130.99°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

15.8°C

Average daily high

20.4°C

Average daily low

11.8°C

Annual rainfall

2,115mm

Sunshine / day

8.4h

Mean relative humidity

78%

Average peak wind

12.4km/h

Seasonal range

21.0°C

Frost days (< 0 °C)

40 d/yr

Hot days (≥ 30 °C)

35 d/yr

Rainy days (≥ 1 mm)

161 d/yr

Annual snowfall

2.0 cm

Average feels-like high

20.9 °C

Average feels-like low

11.5 °C

Average peak gust

38.9 km/h

Tropical nights (≥ 20 °C)

90 d/yr

Solar radiation

14.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.5 °C

since 1940

+0.3 °C per decade · r² = 0.76 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

35.9 °C

17 August 2020

Coldest day

-10.1 °C

10 February 1980

Wettest day

241 mm

19 August 1946

Windiest day

64.5 km/h

30 August 2004

Strongest gust

182.2 km/h

29 August 1971

Hottest feels-like

43.3 °C

16 August 2020

Coldest feels-like

-14.9 °C

25 January 1998

Snowiest day

9.1 cm

23 January 1998

Sunniest day

13.8 h

9 June 1945

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.5 °C2 July 2025	-6.1 °C9 February 2025	16.8 °C	1,805 mm	75	47
2024	35.7 °C31 July 2024	-4.6 °C23 December 2024	17.9 °C	2,587 mm	72	24
2023	34.2 °C14 August 2023	-5.4 °C25 January 2023	17.1 °C	2,454 mm	58	26
2022	33.5 °C9 August 2022	-4.0 °C1 January 2022	17.0 °C	2,235 mm	61	34
2021	33.6 °C30 July 2021	-4.5 °C9 January 2021	17.0 °C	2,167 mm	49	28
2020	35.9 °C17 August 2020	-3.9 °C18 December 2020	17.0 °C	2,423 mm	42	26
2019	33.1 °C31 July 2019	-3.4 °C3 January 2019	17.2 °C	2,017 mm	41	15
2018	33.6 °C24 July 2018	-5.5 °C27 January 2018	16.7 °C	2,472 mm	42	35
2017	34.7 °C29 August 2017	-6.4 °C25 January 2017	16.3 °C	2,341 mm	52	41
2016	34.8 °C15 August 2016	-7.0 °C25 January 2016	17.4 °C	2,754 mm	57	26
2015	34.3 °C30 July 2015	-4.0 °C18 January 2015	16.7 °C	2,862 mm	29	27
2014	34.6 °C26 July 2014	-3.2 °C19 December 2014	16.2 °C	2,526 mm	26	28
2013	35.8 °C10 August 2013	-2.9 °C29 January 2013	16.8 °C	1,627 mm	67	22
2012	32.3 °C28 July 2012	-5.7 °C3 February 2012	16.0 °C	2,797 mm	23	39
2011	32.4 °C12 August 2011	-5.5 °C2 January 2011	16.2 °C	2,189 mm	34	42
2010	32.6 °C18 August 2010	-2.2 °C11 March 2010	16.7 °C	2,334 mm	43	19
2009	33.0 °C11 August 2009	-2.4 °C16 January 2009	16.7 °C	1,836 mm	38	18
2008	34.3 °C1 August 2008	-3.4 °C18 February 2008	16.4 °C	2,036 mm	48	32
2007	35.5 °C29 July 2007	-4.4 °C3 February 2007	17.0 °C	1,920 mm	49	16
2006	34.6 °C8 August 2006	-4.0 °C8 January 2006	16.8 °C	2,040 mm	41	28
2005	34.4 °C26 July 2005	-4.3 °C27 February 2005	16.1 °C	1,790 mm	49	48
2004	35.7 °C30 July 2004	-3.0 °C28 January 2004	17.0 °C	2,383 mm	50	28
2003	33.7 °C6 September 2003	-3.1 °C21 December 2003	16.8 °C	2,319 mm	47	31
2002	33.9 °C18 August 2002	-3.1 °C28 December 2002	16.8 °C	1,971 mm	36	19
2001	33.7 °C4 August 2001	-4.2 °C16 January 2001	16.5 °C	2,182 mm	48	28
2000	34.0 °C21 July 2000	-3.0 °C10 February 2000	16.6 °C	2,030 mm	33	26
1999	32.1 °C14 August 1999	-3.0 °C23 December 1999	16.5 °C	2,426 mm	22	26
1998	34.8 °C7 August 1998	-10.1 °C25 January 1998	17.6 °C	2,468 mm	58	15
1997	33.2 °C2 September 1997	-3.4 °C23 January 1997	16.4 °C	2,058 mm	31	24
1996	33.6 °C23 July 1996	-4.0 °C11 February 1996	15.9 °C	1,856 mm	40	39
1995	33.3 °C20 July 1995	-4.5 °C31 January 1995	15.8 °C	1,833 mm	63	36
1994	35.3 °C12 July 1994	-4.5 °C24 January 1994	16.8 °C	1,636 mm	65	38
1993	32.1 °C11 August 1993	-3.9 °C25 February 1993	15.7 °C	3,145 mm	17	37
1992	34.1 °C1 August 1992	-3.4 °C26 December 1992	16.0 °C	2,285 mm	34	26
1991	33.8 °C23 July 1991	-4.7 °C26 February 1991	16.4 °C	2,283 mm	39	32
1990	34.7 °C7 August 1990	-5.0 °C26 January 1990	16.7 °C	2,628 mm	56	29
1989	32.4 °C13 August 1989	-3.4 °C3 February 1989	16.2 °C	2,187 mm	25	27
1988	33.3 °C7 July 1988	-3.7 °C4 February 1988	15.8 °C	1,736 mm	34	43
1987	32.2 °C20 August 1987	-3.7 °C26 January 1987	16.2 °C	2,206 mm	36	37
1986	32.7 °C27 July 1986	-5.2 °C14 January 1986	15.5 °C	1,476 mm	35	51
1985	32.1 °C28 August 1985	-5.2 °C15 January 1985	15.9 °C	1,956 mm	32	50
1984	34.2 °C17 July 1984	-7.2 °C20 January 1984	15.4 °C	1,700 mm	42	69
1983	34.5 °C3 August 1983	-5.8 °C23 January 1983	15.9 °C	2,459 mm	39	49
1982	31.5 °C1 August 1982	-5.5 °C30 January 1982	15.8 °C	2,261 mm	20	41
1981	32.6 °C20 July 1981	-5.8 °C27 February 1981	15.4 °C	1,699 mm	37	56
1980	32.4 °C20 July 1980	-10.1 °C10 February 1980	15.4 °C	2,220 mm	20	59
1979	33.8 °C10 August 1979	-3.3 °C17 January 1979	15.6 °C	2,462 mm	36	29
1978	33.7 °C5 July 1978	-4.9 °C11 January 1978	15.8 °C	1,840 mm	30	30
1977	33.2 °C8 August 1977	-6.8 °C19 February 1977	15.8 °C	1,943 mm	36	55
1976	32.2 °C14 August 1976	-7.1 °C24 January 1976	15.2 °C	2,513 mm	22	46
1975	33.3 °C23 July 1975	-4.4 °C24 February 1975	15.6 °C	2,310 mm	20	52
1974	33.7 °C15 August 1974	-5.5 °C28 February 1974	15.3 °C	2,029 mm	24	57
1973	33.9 °C22 July 1973	-4.4 °C27 December 1973	15.4 °C	2,133 mm	36	39
1972	32.5 °C2 August 1972	-3.3 °C2 April 1972	15.7 °C	2,615 mm	23	37
1971	33.6 °C3 July 1971	-4.3 °C6 January 1971	15.6 °C	2,439 mm	39	52
1970	33.2 °C23 July 1970	-5.7 °C18 January 1970	15.2 °C	2,403 mm	27	53
1969	35.0 °C12 August 1969	-5.4 °C7 February 1969	15.5 °C	2,197 mm	39	49
1968	32.7 °C11 August 1968	-5.2 °C10 February 1968	15.1 °C	2,324 mm	23	52
1967	34.8 °C17 August 1967	-6.3 °C18 January 1967	15.5 °C	1,796 mm	49	58
1966	33.5 °C6 August 1966	-4.5 °C26 January 1966	15.1 °C	2,273 mm	28	38
1965	31.7 °C21 August 1965	-4.5 °C4 February 1965	14.3 °C	2,004 mm	19	48
1964	33.1 °C10 August 1964	-4.9 °C14 February 1964	16.1 °C	2,469 mm	48	41
1963	32.8 °C22 July 1963	-4.7 °C14 January 1963	15.2 °C	1,700 mm	30	63
1962	32.2 °C7 August 1962	-4.0 °C1 February 1962	15.0 °C	2,101 mm	33	64
1961	33.3 °C14 July 1961	-5.9 °C19 January 1961	16.0 °C	2,064 mm	45	58
1960	33.7 °C16 July 1960	-6.0 °C30 January 1960	15.6 °C	1,890 mm	39	53
1959	32.9 °C26 August 1959	-5.3 °C20 January 1959	15.9 °C	2,571 mm	46	33
1958	33.9 °C22 July 1958	-4.8 °C25 January 1958	15.7 °C	1,746 mm	50	40
1957	32.6 °C21 July 1957	-6.1 °C8 January 1957	15.0 °C	2,503 mm	29	54
1956	34.0 °C6 August 1956	-5.6 °C26 December 1956	15.1 °C	2,064 mm	43	71
1955	32.6 °C20 August 1955	-5.6 °C7 January 1955	15.5 °C	2,067 mm	35	54
1954	33.4 °C11 August 1954	-4.1 °C27 January 1954	15.7 °C	2,382 mm	21	38
1953	34.2 °C23 August 1953	-5.3 °C17 January 1953	15.4 °C	2,184 mm	38	45
1952	33.7 °C2 August 1952	-4.8 °C6 February 1952	15.3 °C	1,950 mm	15	32
1951	32.5 °C29 July 1951	-3.5 °C14 January 1951	15.0 °C	2,062 mm	27	36
1950	30.5 °C7 July 1950	-3.1 °C28 December 1950	15.0 °C	1,917 mm	1	42
1949	30.7 °C2 August 1949	-3.2 °C17 January 1949	14.8 °C	2,373 mm	4	29
1948	31.0 °C6 August 1948	-2.8 °C4 January 1948	15.2 °C	1,917 mm	10	41
1947	32.2 °C12 August 1947	-3.9 °C7 February 1947	14.1 °C	1,285 mm	29	61
1946	35.5 °C15 July 1946	-3.6 °C11 January 1946	15.2 °C	1,535 mm	23	44
1945	31.5 °C4 July 1945	-3.7 °C18 January 1945	14.4 °C	2,054 mm	9	66
1944	31.4 °C18 July 1944	-3.2 °C16 February 1944	14.7 °C	1,616 mm	12	64
1943	30.9 °C16 August 1943	-4.4 °C1 February 1943	14.4 °C	1,383 mm	3	59
1942	34.8 °C31 July 1942	-4.9 °C13 February 1942	14.7 °C	1,350 mm	34	52
1941	31.1 °C1 August 1941	-5.1 °C2 February 1941	14.8 °C	1,617 mm	7	40
1940	32.0 °C26 July 1940	-4.2 °C9 February 1940	14.1 °C	1,219 mm	6	56

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

21.7 °C

+1.3 °C

Hot days (≥ 30 °C)

75 d/yr

+40

Frost days (< 0 °C)

47 d/yr

Annual rainfall

1805 mm

-310 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	10.8 °C	+0.6 °C	32 mm	-35 mm
Feb	10.3 °C	-1.2 °C	63 mm	-33 mm
Mar	16.3 °C	+1.2 °C	147 mm	-1 mm
Apr	20.3 °C	+0.6 °C	159 mm	-29 mm
May	23.2 °C	+0.1 °C	334 mm	+101 mm
Jun	28.3 °C	+2.9 °C	257 mm	-152 mm
Jul	30.2 °C	+0.9 °C	175 mm	-73 mm
Aug	31.3 °C	+1.4 °C	176 mm	-41 mm
Sep	30.1 °C	+2.7 °C	183 mm	-35 mm
Oct	25.9 °C	+3.1 °C	170 mm	+40 mm
Nov	18.5 °C	+0.7 °C	48 mm	-46 mm
Dec	14.6 °C	+2.2 °C	60 mm	-6 mm

The year's extremes

Hottest day

34.5 °C

2 Jul 2025

Coldest day

-6.1 °C

9 Feb 2025

Wettest day

76.9 mm

21 May 2025

Windiest day

27.6 km/h

15 Apr 2025

Strongest gust

90.4 km/h

16 Jun 2025

Hottest feels-like

41.1 °C

5 Aug 2025

Coldest feels-like

-10.2 °C

9 Feb 2025

Snowiest day

0.4 cm

12 Jan 2025

Sunniest day

13.6 h

6 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Soo?

Soo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 2,115 mm of precipitation per year.

What is the hottest day ever recorded in Soo?

The hottest day measured in Soo between 1940 and 2025 was 17 August 2020, reaching 35.9 °C.

What is the coldest day in Soo?

The coldest day measured in Soo between 1940 and 2025 was 10 February 1980, at -10.1 °C.

Does it snow in Soo?

Yes. Soo gets on average 2.0 cm of snow per year and has around 40 frost days.

Has the climate of Soo warmed?

Yes: Soo warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Soo?

The wettest day measured in Soo between 1940 and 2025 was 19 August 1946, with 241 mm of rain in 24 hours.

What was the windiest day in Soo?

The windiest day measured in Soo between 1940 and 2025 was 30 August 2004, with winds reaching 64.5 km/h.

What is the warmest month in Soo?

The warmest month in Soo is August (26.0 °C on average); the coldest is January (5.0 °C).

How much does it rain in Soo?

Soo receives on average 2,115 mm of precipitation per year, spread over about 161 rainy days.

Is it sunny in Soo?

Soo gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.

What is the biggest single-day snowfall in Soo?

The heaviest 24-hour snowfall measured in Soo between 1940 and 2025 was 23 January 1998, with 9.1 cm.

Are there tropical nights in Soo?

Yes: Soo has on average 90 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Soo?

In Soo, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 16 August 2020, and the lowest was -14.9 °C on 25 January 1998.

Compare Soo with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Soo

Other cities — Japan

All cities in Japan →